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General Science
Play this  Quiz Game  On your phone 171 - Fractional distillation, 172 - 0 Ohm, 173 - Exponential decay, 174 - Airfoil, 175 - Isoprene, 176 - Carbon black,   177 - Polyether block amide, 178 - Superlens, 179 - Miscibility, 180 - Butanone.

171. In which process, Liquid nitrogen is produced industrially?

           Steam distillation

           Freeze distillation

           Batch distillation

           Fractional distillation


172. What is the electrical resistance of superconductors?

           100 Ohm

           0 Ohm

           1.2 Ohm

           1 Ohm


173. If a quantity decreases at a rate proportional to its current value, then it is called:

           Exponential decay

           Inverse-square law

           Gauss's law

           Distance decay


174. Recognize the shape.

           Fermat curve

           Nephroid

           Airfoil

           Astroid


175. Natural rubber contains:

           Ethylene

           Isoprene

           Styrene

           Polyethylene


176. Which material is produced by incomplete combustion of heavy petroleum?

           Potash

           Charcoal

           Ash

           Carbon black


177. PEBA (Copolymer) stands for:

           Polyether black amide

           Polyether block amide

           Polimer block amide

           Polimer block acid


178. Lens which uses metamaterials to go beyond the diffraction limit are called:

           Superlens

           Diff-lens

           Sublens

           Hypolens


179. The property of substances to mix in all proportions to form a homogeneous solution is called:

           Chemical reactivity

           Miscibility

           Viscoplasticity

           Viscosity


180. Methyl ethyl ketone is also known as:

           n-Butanol

           Dimethyl ether

           Butanone

           Butane